I have an up in view that has the maps and more dok. EZ June 2019. Since I don’t need the on-board computer and do not want to plug my phone into the holder every time, I thought to myself, since I still have a new Garmin Drive 61, I can mount this. Question would be, is there a holder for? Is there always power on the USB can on the dok, or only when the ignition is on? Thank you. Greetings